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Product Highlights

The MA-1000 consists of an adjustable-gain input buffer, a precision full-wave rectifier, and a moving averager circuit. It is used for the accurate quantification of electromyogram (EMG) and electroneurogram (ENG) signals. The moving averaging circuit is a 3rd order Paynter low-pass filter that creates a contoured or smoothed envelope around the rectified signal, with selectable degrees of smoothing. Smoothing is accomplished by the selection of a time constant, conveniently implemented by front panel pushbutton switches.

MA-1000 Specifications(1)

Input impedance: 1MΩ single-ended

Input voltage range: ±10V

Input coupling: AC or DC, switchable

Rectifier offset and asymmetry: ±5mV max

Frequency response: DC to 25kHz

Rectified output voltage range: 0 to 10V

Moving average output voltage range: 0 to 10V

Output impedance: any output <10Ω

Input/output connectors: BNC

Power requirements: ±12VDC @ 50mA

Dimensions: 2.5W × 5.05H × 9.5D (inches)

(1) The MA-1000 IS NOT to be used for human patient-connected applications.